/**
 * Copyright 2010 Xeus Technologies 
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); 
 * you may not use this file except in compliance with the License. 
 * You may obtain a copy of the License at 
 * 
 *      http://www.apache.org/licenses/LICENSE-2.0 
 * 
 * Unless required by applicable law or agreed to in writing, software 
 * distributed under the License is distributed on an "AS IS" BASIS, 
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 
 * See the License for the specific language governing permissions and 
 * limitations under the License. 
 * 
 */

package org.xeustechnologies.jcksum;

import java.io.FilterOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.util.zip.Checksum;

public class ChecksumOutputStream extends FilterOutputStream {
    private Checksum hashsum;

    public ChecksumOutputStream(OutputStream out, Checksum hashsum) {
        this( out );
        this.hashsum = hashsum;
    }

    protected ChecksumOutputStream(OutputStream out) {
        super( out );
    }

    public void write(int b) throws IOException {
        out.write( b );
        hashsum.update( b );
    }

    public void write(byte[] b, int off, int len) throws IOException {
        out.write( b, off, len );
        hashsum.update( b, off, len );
    }

    public Checksum getChecksum() {
        return hashsum;
    }
}
